Fan hub oil leakage monitoring and alarming device

Abstract

The utility model belongs to the technical field of alarming, particularly relates to an oil leakage monitoring and alarming device for a fan hub, and provides the following scheme aiming at the existing problems that the sealing performance of an oil seal is reduced along with the increase of service time, hydraulic oil leakage is easily caused, the leakage of the hydraulic oil cannot be timely found manually, and a fan is easily damaged when continuously working. The fan comprises a fan, a fan hub is arranged in the fan, and the fan further comprises a side cover fixed in the fan hub through bolts. A fixing frame is arranged in the fan hub, and the fixing frame is fixed in the fan hub of the fan through a clamping assembly; a group of monitoring assemblies are arranged in the fan, and the monitoring assemblies are used for monitoring the oil leakage condition in the hub of the fan in real time; real-time monitoring and alarming of the oil leakage condition of the fan hub are achieved, the fault response speed is greatly increased, and the equipment damage risk caused by oil leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of alarm technology, and in particular to a wind turbine hub oil leakage monitoring and alarm device. Background Technology

[0002] Wind turbine generator sets mainly consist of blades, hub, main shaft, gearbox, generator, tower, etc. The wind turbine adopts hydraulic pitch control, and the wind turbine pitch control system is usually located inside the wind turbine hub. Due to the increase in service life, the sealing components of the hydraulic system will often age, resulting in oil leakage in the hydraulic system inside the hub. The leakage of lubricating oil cannot be detected in time by humans. If the wind turbine continues to operate, it is easy to be damaged. This utility model patent is to solve the problem of the inability to monitor and alarm in time for oil leakage inside the wind turbine hub of the wind turbine generator set. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as the wind turbine pitch system being located inside the wind turbine hub, the hydraulic system sealing components aging due to increased service life leading to oil leakage in the hub, the inability to detect lubricating oil leakage manually in time, and the risk of damage to the wind turbine if it continues to operate. Therefore, this invention proposes a wind turbine hub oil leakage monitoring and alarm device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wind turbine hub oil leakage monitoring and alarm device includes a wind turbine, wherein the wind turbine has a hub, and further includes:

[0006] The side cover is fixed inside the wind turbine hub by bolts;

[0007] The wind turbine hub is provided with a fixing frame, which is fixed to the wind turbine hub by a clamping assembly;

[0008] The wind turbine is equipped with a set of monitoring components, which are used to monitor the oil leakage inside the wind turbine hub in real time.

[0009] A sealing assembly, which is located within a fixed frame, is used to seal the gaps between the fan and the side cover.

[0010] In one possible design, the clamping assembly includes a fixed base plate fixed to the side of the fixed frame. A first groove is formed in the fixed base plate, and two threaded blocks slide in the first groove. A bidirectional lead screw rotates in the first groove. The two threaded blocks are respectively threaded to the positive and negative threaded sections on the circumferential surface of the bidirectional lead screw. An arc-shaped clamping plate is fixed to the side end of each of the two threaded blocks. The inner arc surface of the two arc-shaped clamping plates is in contact with the surface of the fan. The side end of the first groove moves outward through the fixed base plate and is fixed with a handle.

[0011] In one possible design, the inner arc surfaces of both of the arc-shaped clamps are provided with anti-slip pads.

[0012] In one possible design, the sealing assembly includes a first limiting plate and a second limiting plate, which are respectively fixed at both ends within a fixed frame. The second limiting plate is in contact with the surface of the fan, and the first limiting plate is in extrusion contact with the side end of the fan. A monitoring gap is formed between the first and second limiting plates and the fan.

[0013] In one possible design, the monitoring component includes an oil leakage sensor fixed within a first limiting plate, the oil leakage sensor being located below a monitoring gap for leaking hydraulic oil to slide off.

[0014] In one possible design, a miniature alarm electrically connected to the oil leak sensor is fixed to the side end of the mounting frame.

[0015] In this application, the fixing frame is inserted into the fan and side cover. When the first limiting plate and the side cover are pressed into contact, the gap between the fan and the side cover is located within the monitoring gap. Then, the handle is turned to drive the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw drives the two threaded blocks to move in the same direction. The two threaded blocks drive the two arc-shaped clamps to move in the same direction, so that the two arc-shaped clamps are clamped and fixed to the surface of the fan, thereby fixing the position of the fixing frame. When oil leakage occurs, it drips into the monitoring gap from the gap and flows to the oil leakage sensor along the monitoring gap. When the oil leakage is detected, the miniature alarm is activated to sound an alarm, so that the staff can carry out maintenance in a timely manner.

[0016] Beneficial effects

[0017] In this utility model, the wind turbine hub oil leakage monitoring and alarm device can be quickly and effectively fixed to the wind turbine through the clamping component.

[0018] In this utility model, the wind turbine hub oil leakage monitoring and alarm device can achieve the effect of collecting leaked hydraulic oil by sealing the gaps and using gravity sensing to detect whether there is hydraulic oil leakage, thus providing timely and effective reminders to the staff.

[0019] In this invention, the combination of an oil leak sensor and a miniature alarm enables real-time monitoring and alarm of oil leaks in the wind turbine hub, greatly improving the fault response speed and reducing the risk of equipment damage caused by oil leaks. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a wind turbine hub oil leakage monitoring and alarm device proposed in this utility model;

[0021] Figure 2 This is a partial exploded view of a wind turbine hub oil leakage monitoring and alarm device proposed in this utility model;

[0022] Figure 3 This is a first partial sectional view of a wind turbine hub oil leakage monitoring and alarm device proposed in this utility model;

[0023] Figure 4 This is a second partial cross-sectional view of a wind turbine hub oil leakage monitoring and alarm device proposed in this utility model.

[0024] In the diagram: 1. Fan; 2. Side cover; 3. Arc-shaped clamp; 4. Fixed base plate; 5. Tightening handle; 6. Fixed frame; 7. Miniature alarm; 8. First limiting plate; 9. Second limiting plate; 10. Oil leakage sensor; 11. Two-way lead screw; 12. First groove; 13. Threaded block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Reference Figures 1-4 An alarm device, firstly, places the fan 1 in a predetermined position, and then tightly fixes the side cover 2 inside the fan hub of the fan 1 with bolts to close the side opening of the fan hub;

[0028] Next, the fixing frame 6 is placed inside the fan hub of the fan 1 and fixed using the clamping assembly. The fixing base plate 4 of the clamping assembly is fixed to the side of the fixing frame 6 by bolts or welding. Then, the bidirectional lead screw 11 is installed in the first groove 12 and is made to rotate smoothly. The two threaded blocks 13 are respectively threaded onto the positive and negative threaded sections of the bidirectional lead screw 11. Then, the arc-shaped clamping plate 3 is installed to the side of the threaded block 13. By rotating the handle 5, the bidirectional lead screw 11 is rotated, causing the two arc-shaped clamping plates 3 to move towards each other until their inner arc surfaces are in close contact with the surface of the fan 1, thus achieving clamping and fixing.

[0029] Inside the fixed frame 6, a sealing assembly is installed to further reduce the risk of oil leakage. The first limiting plate 8 and the second limiting plate 9 are respectively fixed to the two ends of the fixed frame 6 to ensure that the second limiting plate 9 is in contact with the surface of the fan 1, while the first limiting plate 8 forms a squeezing contact with the side end of the fan 1, thereby forming a monitoring gap between the two.

[0030] An oil leakage sensor 10 is installed inside the first limiting plate 8, located on the lower side of the monitoring gap, in order to monitor the leakage of hydraulic oil from inside the hub of the wind turbine 1.

[0031] This application can be used for monitoring and alarming oil leaks in wind turbine hubs, and can also be used in other fields applicable to this application.

[0032] Example 2

[0033] refer to Figures 1-4 An improvement based on Example 1: A wind turbine hub oil leakage monitoring and alarm device, which is used in the field of wind turbine technology, fixes the miniature alarm 7 to the side of the fixed frame 6 and connects it to the oil leakage sensor 10 through a wire. When the oil leakage sensor 10 detects oil leakage, it triggers an alarm signal. The miniature alarm signal is connected to the wind turbine control system to remind maintenance personnel to deal with the oil leakage problem in time.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of the oil leak sensor 10 and the miniature alarm 7 are commonplace and are conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A wind turbine hub oil leakage monitoring and alarm device, comprising a wind turbine (1), wherein the wind turbine (1) is provided with a wind turbine hub, characterized in that, Also includes: The side cover (2) is fixed to the fan hub by bolts; The fan (1) has a fixed frame (6) inside its fan hub, and the fixed frame (6) is fixed inside the fan hub of the fan (1) by a clamping assembly. The fan (1) is equipped with a set of monitoring components. The monitoring components are used to monitor the oil leakage in the hub of the fan (1) in real time. The clamping component includes a fixed base plate (4) fixed to the side of the fixed frame (6). The fixed base plate (4) has a first groove (12). Two threaded blocks (13) slide in the first groove (12). A bidirectional screw (11) rotates in the first groove (12). The two threaded blocks (13) are respectively threaded to the positive and negative thread sections on the circumferential surface of the bidirectional screw (11). The side ends of the two threaded blocks (13) are fixed with arc-shaped clamps (3). The inner arc surfaces of the two arc-shaped clamps (3) are in contact with the surface of the fan (1). The side end of the first groove (12) moves outward through the fixed base plate (4) and is fixed with a handle (5).

2. The wind turbine hub oil leakage monitoring and alarm device according to claim 1, characterized in that, The inner arc surfaces of both of the arc-shaped clamps (3) are provided with anti-slip pads.

3. A wind turbine hub oil leakage monitoring and alarm device according to any one of claims 1-2, characterized in that, It also includes a sealing assembly, which is located in the fixed frame (6) to seal the gap between the fan (1) and the side cover (2). The sealing assembly includes a first limiting plate (8) and a second limiting plate (9). The first limiting plate (8) and the second limiting plate (9) are respectively fixed at both ends in the fixed frame (6). The second limiting plate (9) and the surface of the fan (1) are in contact. The first limiting plate (8) and the side end of the fan (1) are in contact. A monitoring gap is formed between the first limiting plate (8) and the second limiting plate (9) and the fan (1).

4. The wind turbine hub oil leakage monitoring and alarm device according to claim 3, characterized in that, The monitoring component includes an oil leakage sensor (10) fixed inside the first limiting plate (8). The oil leakage sensor (10) is located below the monitoring gap, which is used for leaking hydraulic oil to slide down.

5. The wind turbine hub oil leakage monitoring and alarm device according to claim 4, characterized in that, A miniature alarm (7) electrically connected to the oil leak sensor (10) is fixed to the side end of the fixed frame (6).

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